<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>
    <script>
        // //循环打印出来1-100的值
        // var i = 1;
        // while(i <= 100){
        //     console.log(i);
        //     i++
        // }
        var sum = 0;
        var i = 1;
        while(i <= 100){    
            sum += i;
            i++;
        }
        console.log(sum);
    </script>
</body>
</html>